public Object visit(ASTWhereClause node, Object data) {
return node.childrenAccept(this, constraintNode);
}
public Object visit(ASTPredicate node, Object data) {
NAryQueryNode parent = (NAryQueryNode) data;
int type = node.getOperationType();
QueryNode predicateNode;
try {
final QName[] tmp = new QName[2];
final ASTLiteral[] value = new ASTLiteral[1];
node.childrenAccept(new DefaultParserVisitor() {
public Object visit(ASTIdentifier node, Object data) {
if (tmp[0] == null) {
tmp[0] = node.getName();
} else if (tmp[1] == null) {
tmp[1] = node.getName();
}
return data;
}
public Object visit(ASTLiteral node, Object data) {
value[0] = node;
return data;
}
public Object visit(ASTLowerFunction node, Object data) {
getIdentifier(node);
return data;
}
public Object visit(ASTUpperFunction node, Object data) {
getIdentifier(node);
return data;
}
private void getIdentifier(SimpleNode node) {
if (node.jjtGetNumChildren() > 0) {
Node n = node.jjtGetChild(0);
if (n instanceof ASTIdentifier) {
ASTIdentifier identifier = (ASTIdentifier) n;
if (tmp[0] == null) {
tmp[0] = identifier.getName();
} else if (tmp[1] == null) {
tmp[1] = identifier.getName();
}
}
}
}
}, data);
QName identifier = tmp[0];
if (identifier.equals(QName.JCR_PATH)) {
if (tmp[1] != null) {
// simply ignore, this is a join of a mixin node type
} else {
createPathQuery(value[0].getValue(), parent.getType());
}
// done
return data;
}
if (type == QueryConstants.OPERATION_BETWEEN) {
AndQueryNode between = new AndQueryNode(parent);
RelationQueryNode rel = createRelationQueryNode(between,
identifier, QueryConstants.OPERATION_GE_GENERAL, (ASTLiteral) node.children[1]);
node.childrenAccept(this, rel);
between.addOperand(rel);
rel = createRelationQueryNode(between,
identifier, QueryConstants.OPERATION_LE_GENERAL, (ASTLiteral) node.children[2]);
node.childrenAccept(this, rel);
between.addOperand(rel);
predicateNode = between;
} else if (type == QueryConstants.OPERATION_GE_GENERAL
|| type == QueryConstants.OPERATION_GT_GENERAL
|| type == QueryConstants.OPERATION_LE_GENERAL
|| type == QueryConstants.OPERATION_LT_GENERAL
|| type == QueryConstants.OPERATION_NE_GENERAL
|| type == QueryConstants.OPERATION_EQ_GENERAL) {
predicateNode = createRelationQueryNode(parent,
identifier, type, value[0]);
node.childrenAccept(this, predicateNode);
} else if (type == QueryConstants.OPERATION_LIKE) {
ASTLiteral pattern = value[0];
if (node.getEscapeString() != null) {
if (node.getEscapeString().length() == 1) {
// backslash is the escape character we use internally
pattern.setValue(translateEscaping(pattern.getValue(), node.getEscapeString().charAt(0), '\\'));
} else {
throw new IllegalArgumentException("ESCAPE string value must have length 1: '" + node.getEscapeString() + "'");
}
} else {
// no escape character specified.
// if the pattern contains any backslash characters we need
// to escape them.
pattern.setValue(pattern.getValue().replaceAll("\\\\", "\\\\\\\\"));
}
predicateNode = createRelationQueryNode(parent,
identifier, type, pattern);
node.childrenAccept(this, predicateNode);
} else if (type == QueryConstants.OPERATION_IN) {
OrQueryNode in = new OrQueryNode(parent);
for (int i = 1; i < node.children.length; i++) {
RelationQueryNode rel = createRelationQueryNode(in,
identifier, QueryConstants.OPERATION_EQ_VALUE, (ASTLiteral) node.children[i]);
node.childrenAccept(this, rel);
in.addOperand(rel);
}
predicateNode = in;
} else if (type == QueryConstants.OPERATION_NULL
|| type == QueryConstants.OPERATION_NOT_NULL) {
// create a dummy literal
ASTLiteral star = new ASTLiteral(JCRSQLParserTreeConstants.JJTLITERAL);
star.setType(QueryConstants.TYPE_STRING);
star.setValue("%");
predicateNode = createRelationQueryNode(parent,
identifier, type, star);
} else {
throw new IllegalArgumentException("Unknown operation type: " + type);
}
} catch (ArrayIndexOutOfBoundsException e) {
throw new IllegalArgumentException("Too few arguments in predicate");
}
if (predicateNode != null) {
parent.addOperand(predicateNode);
}
return data;
}